| Primary satellite | Secondary satellite |
| Name | Cosmos 1400 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 13403 | 37403 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 08 13:21 | 2021 Mar 07 22:36 |
| Time of closest approach (UTC) | 2021 Jan 18 18:45:05.660 |
| Minimum distance | 213.120 km |
| Height difference | 5.577 km |
| Relative speed | 14.011 km/s |
| Angle between velocity vectors | 136° |
| Geographic position | 81.1°N, 94.1°W |
| Height | 582 km |
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